Metering device



' April 19, 1932, oN 1,855,044

METERING DEVICE Filed July 20 1925 Patented Apr. 19, 1932 Y UNITED ST TE Assrenons r sornra comumna Application filed July 20,

This invention is designed to provide a ready indicator for the flow, of fluids'partioularly in such relations as with pneumatic tools. Such devices at frequent intervals become so deranged as to draw excessive amounts of fluid, or do not properly operate and this device is designed to readily indicate such failure. The device, however, is useful wherever it is desired to read the 1:; flow of fluids. Features and-details of the invention will appear from the specification and claims.

The invention is illustrated in the accom-v panying drawings as follows 1 Fig. 1 shows a side elevation of the assembled device.

Fig. 2 shows a central section through the metering device.

V Fig. 3 showsan'enlarged vi w of the scale. Fig. 4 shows a section on the line 4.4: in

"Fig. 5 shows a section on the line'5 -5 in 2. l I ig. 6 shows a detached view partly broken away of the body of the metering cylinder. P

Fig.1? shows fillers at the bottoms of the. slits of the metering cylinder.

Fig. 8 shows the ring closing the bottom of the metering cylinder.

1 marks the body of the metering device,

7 2 the inlet and 3 the discharge from the metering device.

. A metering cylinder 4 is placed in the 1 body through an opening 5 at the bottom of the body, the upper end of the cylinder 'fitting into a c lindrical part 6 in the upper end of the body and'seating against a gasket 7. The lower end ofthe cylinder is seated 4 on a ring 8. Bars 9 connect the ring 8 with a cap 10 closing the opening 5. The ring 8 is secured in a screw-threaded opening 11 in i the body and separates the dischargev and inlet portions of the body. The bars 9afi'ord a passage for the fiuid to an interior open- PATENT" OFFICEQ RUDOLPH comma," or "ER E, PENNsYLVANIAQ sorHIA' OONRADER AND ANNA LAURA CONRADEB SEITZ, EXECUTRICES'OF SAID RUDOLPH CONRADEIQ, DECEASED,

METERING mnvion 192a swarm. 44,939.

ing 12 which communicates with the lower end of the cylinder. The upper end of the ring 8 has a shoulder 13 which centers the rected slits 15 which are axially continuously extended throughout the length that they are opened and closed by the piston. The

metering pistonrests at the bottom of the cylinder when there is no flow, the bottom seating on a taperedsurface 8a. The cylindrical edge of themetering piston 14 forms a square corner with its under surface and this formsa line contact withthe seat 8a and as a result ofthis the entire area of the piston is subjected to the pressure below it in its initial position. 7 r p p As the liquid flow enters the inlet and reaches the metering piston the plunger piston is lifted to correspond to the flow of the fluid through the slits 15 thus accurately meteringthe flow through the device,"the weight of the piston and connecting parts .making a constant differential which canbe readily allowed for.

A stem 16 extends upwardly from the piston into a glass 17. The glass is mounted in stufiing boxes 18 and 19 at the top and bottom so that there is nonecessity for a close fit around the stem 16 where it passes through the body. The stufling box 18 is mounted I on a fitting 18a screwed into an opening 186 in the upper end of the body and the upper stuffing box is carried by a frame 21a formed integrally with the body and having a screwthreaded opening 19a at its top in which a fitting 19b is screwed having a socket 190 into which the glass extends... The outer edge 1 tonmustbe wery .sensitiveendranyzsediment i of this fitting is screw-threaded to secure it variouspressures indi'catedrat ltheztopsioi the columns. The total quantity passing Will be indicated by the quantity reading opposite the column corresponding to the pressure to which the fluid is subjected: Thus if the 1 stem were at the-ireading .givingracolumn of cubic feetjandithere was apressu're of 3.0 ,pounds lthemtotal quantity passing would he 32.661 :feet.

I pr'e fer to .the pressurelgauges 23 Qaatthe discharge and inlet s'idesof the metering device, these gauges: indicating the differential which occurs at ,the two sides of ,the {device and lthus immediately indicating .any derangement ,of disturbance in .the .ac-

tion of the metering ,device. This .is' parlticu- ;l=arly desirable in that .the response-of thepis- -01 obstruction disturbs this movement. I [prefer to provide a dash ,potcat ,the lup p er lend Qof the cylinder. 1, therefore extend the cylinder 4 above-the upper-end of the slits and :secure a piston on the stem 1,6, .the pis- ,ton :having sufficient-clearance with relation zarrazngeithe :bl'ocksz28zin the bottom 'endsof the r i to the iwalls topermit-iogfv-lthe liquidtransfer 4o necessary rtO give the dash pot action,

7 In iormi-ng-the.qylincler 4 I prefento have tom of the cylinder and 'reenforce';the bottom cy'liinder. In order-toprevent thespringing 'oit' :thecylindea in theisecuringofthe ring I ribs :29 (on its outervpenipherykbetiweenwthe slits to stiffen the cylinder. Eigsflian'dfi the cylinder and ibloo'ksand ring are shown :separaitely before assembly.

/ What I claimas -new'is=:

1. In a metering device, the combination of 'a metering"cylinderfhaving radially :di-

lrecte d and axially continuously extending metering slits f-in the lower portion of the cylinderwall; a metering piston in the cyltzon .a chamber receiving the (discharge :from the slits; and a dash pot piston in the upper end of the cylinder and receiving .metering cylinder.

portion. of the cylinder above the slits and connected with the metering piston.

2. In a metering device, the combination of a metering cylinder having slits extending upwardly from its lower end; a ring extending around the cylinder at its lower end; a metering piston arranged in the cylinder; and means for delivering fluid to the lower the disiihargefiromthe slits.

In a'me'tering device, the'conibination 'o'fa metering cylinder having slits extendng @urW d-ly m alewenen w m nefieten-ding around the cylinder-at its =lower1end r filling wblocks within the ,ring iin t'he lower ends of the slits; a metering piston arranged the stem asit corresponds to the florwiandiin' ithei-acylinder; and means for delivering fluid to the lower end of the, cylinder and "receiving thedischarge from the slits.

4;. In a meterlng device, the combination ening the cylinder between thefs'lit-s; arin g extendin around the qyun eria its l'ower ends fil' ing blocks within the l'r'ing "in "the lower ends of rhesus a 'metjering piston arranged in the cylinder; *mea'nsiQr dc-r 'liveringffluid to the "lower end (if {the cylinder and receivingthedischarge nor 'thelits.

5. 'In a metering dev'ice,"the combination of .a body having a metering, cylinder socket at its upper end, an opening "through its lower end through whiht'h'e,metering cy'linder may 'beintroduced, and lateral inlet 7 and discharge: openings, one above .the other with-a separating wallbetween,"said -.wa1l havingan opening therethrough aime't.ering icylIinderfhavigg itsp r end ,seatingfinthe socket; and a o'llower extendingt'hroaghthe and forming a scatter the lower en-d'fof the 5, a metering rdevice, ithe ,coinli 'rnation of. abody having an openingthroug'h'thelidt- ;.tom and a cylinder receiving .socketlaitfthe "top; a partition ,dii idingz..thef fbo dy iiznto-zan I V 7 g I openingin-thelbottomzand th'e separatingwwall ;the slits '15 ze-xtend entirely through the hotinlet [chamber anaa idi'scfhai'fgef'chain ber, the

body having a lateral 'inletr-openingdeading ltO the inlet chamber maximal-"e15 charge ropeningleading Efrem the ldischange chamber, one opening being above the -.other' and :a metering cylindersin the Pbody seating in the socket and removable through the opening v1n the bottom; and means comrising ,a plug closing the .o pe1iing in "the 'ottom andia member ,clampingxthemetering cylinder place, said .meniber having a passage for fluids xconnection with the metering cylinder, -V I V "7. In .a metering (device, the combination \of a metering cylinder ;,a meteringsp'iston in the cylinder .a miemherrmovin-g with the gpiston, vand a computing scaleadjacent member and having vertical columns side'by side, said columns being designated as indicating varying pressures, said columns having computations arranged in horizontal lines, said scale being traversed vertically by the member moving with the piston whereby the amount indicated on the scale horizontally opposite the member and vertically below the pressure indication of the pressure of the fluid being measured shows the flow volume.

In testimony whereof I have hereunto set my hand.

RUDOLPH CONRADER. 

